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Dayton L090 jaw coupling hub, sintered iron, 7/8 inch bore, set screw locking

Dayton

Dayton 29HY87 L090 jaw coupling hub sintered iron 7/8 in bore

SKU CH-849D-6J68T

Sintered iron hub with 7/8 in bore and keyway handles up to 9,000 RPM for L090 jaw couplings

  • Sintered iron hub handles up to 9 000 RPM
  • 7/8 in bore with 3/16 in keyway fits standard shafts
  • Set screw locking secures hub without extra hardware
  • Buna-N spider delivers 0.23 hp at 100 RPM
  • Urethane spider raises capacity to 0.35 hp at 100 RPM

Dayton 29HY87 L090 Jaw Coupling Hub

This Dayton 29HY87 L090 jaw coupling hub is a sintered iron component for power transmission systems. It connects two shafts using a 7/8 inch round bore with a keyway. The hub uses a set screw for shaft locking and a straight jaw profile. It is built for industrial machinery applications.

Suits shafts needing a 7/8 inch bore with keyway

Buyers who need a different bore diameter or a spline bore should look elsewhere. The fixed 7/8 inch size and keyway dimensions of 3/16 inch width by 3/32 inch depth limit compatibility. Those requiring a clamp or keyless locking method must choose another hub.

Maximum speed 9000 RPM with spider options

The hub runs at up to 9000 RPM. Horsepower at 100 RPM varies by spider material: 0.23 hp with Buna-N, 0.35 hp with urethane, and 0.64 hp with Hytrel. Select the spider to match the torque requirement. The overall length is 2 1/8 inches and outside diameter is 2 7/64 inches.

Highlights

  • Sintered iron hub handles up to 9 000 RPM
  • 7/8 in bore with 3/16 in keyway fits standard shafts
  • Set screw locking secures hub without extra hardware
  • Buna-N spider delivers 0.23 hp at 100 RPM
  • Urethane spider raises capacity to 0.35 hp at 100 RPM

Specifications

No published specifications for this item yet.

Questions about this item

What spider material should I keep on hand for the L090 hub when the original wears out?

The hub accepts Buna-N, urethane or Hytrel spiders; choose the same material that matches your torque and temperature needs.

At what speed does the 29HY87 hub reach its 9,000 RPM rating during continuous operation?

The hub is rated for 9,000 RPM maximum; sustained operation at that speed depends on alignment, lubrication and the spider’s heat limit.

How much heat does the sintered-iron hub generate when running at 100 RPM with a Hytrel spider?

At 100 RPM the Hytrel spider transmits 0.64 hp; the hub itself adds minimal heat, but total temperature rise depends on load and ventilation.

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